Improvement in valves for bellows



'J. BADGER 8v H. P. BENJAMIN.

Valve for Bellows.

No-.2I3,375 Patented Mar. 18,1819.

ATTORN EY QETNESSES same.

UNITED STATES PATE QFFI JOHN BADGER AND HARVEY P. BENJAMIN, OFBELVIDERE, ILLINOIS.

IMPROVEMENT IN VALVES FOR BELLOWS.

Specification forming part of Letters Patent No. 213, 3'75, dated March18, 1879; application filed January. 18, 1879.

To all whom it may concern 1 Be it known that we, JOHN BADGER and H. P.BENJAMIN, of Belvidere, in the county of Boone and State of Illinois,have invented a new and valuable Improvement in Valves for Bellows; andwe do hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the annexed drawings, making a part of this specification,and to the letters and figures of reference marked thereon.

Figure l of the drawings is a representation of a top view of abellows-board, showing our valve. Fig. 2 is a transverse section of theFig. 3 represents a cross-section of valve, showing same open. Fig. 4.is a perspective view of valve and attachment-bar.

This invention has relation to improvements in blacksmiths bellows; andthe nature of the invention consists in the arrangement and novelconstruction of a double valve, hinged at its middle portion to ametallic bar extending across the valve-hole, and formed of elasticpaper-board with a sheep-skin facing, whereby the valve is made verylight and sensitive, as will be hereinafter more fully set forth.

In the annexed drawings, the letter A designates the plank part of anordinary bellows, strengthened on the outside by transverse cleats b b,and having formed therein a rectangular opening,e, between the saidcleats, and bounded on two sides thereby. Spanning this opening, andsecured by means of its arms 0 to the said cleats, is a metallic bar, d,centrally arranged, as shown in Fig. 1, thus dividing the valve-openinginto two equal parts.

i B designates the valve, composed of two wings, d, and opening downwardand closing upward against the under side of board A. This valve iscomposed of a sheep-skin face, 6 and of two sheets of paper-board, 0,s9- cured thereto by means of nails or tacks extending through the faceand clinched upon the sheets 0 These are of sufficient size to lap theedges of the opening, and are separated by a flexible part, i, of thefacing. This double valve is placed in the opening with its flexiblepart i resting on the bridge bar d, and is clamped in position by meansof a central wooden bar, j, and rivets extending through the whole, asshown. The wings being stiltened by the paper-board, which is extremelylight, renders the valve very sensitive in opening and closing.

The central stop-barj acts as an abutment, against which the inner edgesor shoulders z of the paper portion rest when the valve-win gs aredepressed, and the elastic action between the paper and wood enablesthem to be easily separated by the wind-pressure when the bellows isclosing, so that they will close at once, allowing little or no air toescape.

We are well aware that a double-weighted pump-valve has been formed bysecuring metallic blocks on the upper surface of a flexible valve-piececentrally secured, and we do not clainf such invention.

What we claim as new, and desire to secure by Letters Patent, isp In abellows having the opening 0 and the central bar (I, the double valve'B,consisting of the leather bridge and facing 0 the central dependingwooden stop-barj, and the paper wings or stiffeners 6 under saidleather, and having inner edges or shoulders z, adapted to bear againstthe stop-bar j when the wings are depressed, substantially as specified.

In testimony that we claim the above we have hereunto subscribed ournames in the presence of two witnesses.

JOHN BADGER. HARVEY P. BENJAMIN.

Witnesses:

BYRON J. MORSE, WILLIAM R. DODGE.

